SPRS902K October 2014 – February 2024 TMS320F28075 , TMS320F28075-Q1 , TMS320F28076
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
When VREGENZ is tied to VSS, the VDD sequencing requirements are handled by the device.
When using an external source for VDD (VREGENZ tied to VDDIO), VDDOSC and VDD must be powered on and off at the same time. VDDOSC should not be powered on when VDD is off. During the ramp, VDD should be kept no more than 0.3 V above VDDIO.
For applications not powering VDDOSC and VDD at the same time, see the "INTOSC: VDDOSC Powered Without VDD Can Cause INTOSC Frequency Drift" advisory in the TMS320F2807x Real-Time MCUs Silicon Errata.
There is an internal 12.8-mA current source from VDD3VFL to VDD when the flash is active. When the flash is active and the device is in a low-activity state (for example, a low-power mode), this internal current source can cause VDD to rise to approximately 1.3 V . There will be zero current load to the external system VDD regulator while in this condition. This is not an issue for most regulators; however, if the system voltage regulator requires a minimum load for proper operation, then an external 82Ω resistor can be added to the board to ensure a minimal current load on VDD. See the "Low-Power Modes: Power Down Flash or Maintain Minimum Device Activity" advisory in the TMS320F2807x Real-Time MCUs Silicon Errata.